Paper-folding machine



April 13,1926.

A. OLSON PAPER FOLDING MACHINE Filed August l5, 1925 Patented Apr. 13, 1926.

l UNITED STATES PA TENT OFFICE.

ANDREW OLSON, OF CLEVELAND, OHIO, ASSIGNOR TO THE CLEVELAND FOLDING MA- CHINE COMPANY, 0F CLEVELAND, OHIO, A CORPORATION OF OHIO. y,

PAPER-FOLDING MACHINE.

Application led August 13,1923. Serial No. 657,235.

To all rwhom 'it may concern:

Be it known that I, ANDREW OLSON, a citizen of the United 'States of America, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Paper- Folding Machines, of which the following is a specification. A

My invention relates to improvements in paper-folding machines and more particularly to the mounting of the rolls in such machines. The object of my invention is to insure better operation of the folding rolls by roviding a self-adjusting mounting thereibr.

It is a common experience in the industry to find a roll or rolls of the bank or' series of rolls of a paper-folding machine worn unequally at one vend, and especially is this true where knurled rolls are employed.

This results from the fact that all of the k sheets of paper, whether of broader or narrower dlmensions, must pass through a givenset or setsof rolls and in the same lateral position, as at the right hand ends thereof. Moreover, the first pass of rolls necessarily must be encountered by all of the sheets handled by the machine, thereby contributing to the undue wear of said rolls.

Accordingly, I have devised means for successfully compensating for vsuch unequal wear and permittin the proper operation of the folding mac ine` for an indenite period, regardless of material wear and con-l sequent decrease in diameter portion of the lengths 'of its `The structural details, improvements and" their advantages and operations of the yfolding machine to which my invention is applied, ma be better. explained in connection with t e accompanyindrawings, wherein:

igure 1 is a vertical sectional view, partially di ammatic and fragmentary in character illustrating the coacting sets of rolls for four 'different folding plates.

throughout a y rolls. incorporating my broken away and inj section, illustrating `two of such rolls in side elevation. f 1

Fig. 3 is asectional viewfof the mounting on line 3 3, (Fig. 2. j

Fig. 4 isa fragmentary viewof one of 'a roll.

, asmuch aseach roll of a Fig. 2 is afragmentary vlew, partially' com ,tot A Fig. 5.is .a vertical sectional view 'of itsi rubber mounting member.

F 1g. 6 is a vertical sectional 'view of its' end of the roll and a vertical section on line 8 8, Fig. 7

Throughout the several figures` of the' drawings 'I have emplo ed the same character of reference4 to in icate similar parts.

Referring first/t0 Figure 1, the four folding plates a, b, c and -will readily be recognized `in their co-operativerelation with the'folding rolls e, f, g, h, z'. and y'. The'paper k is shown as it passes between the feeding rolls `Z and m; being buckled between the rolls f and g to enter the folding plate b in accordance with the well nown practice in folding machines.-

As all` of the paper handled must pass between the rolls e and f initially and on the right hand sides or ends thereof, their knurled surfaces are subjected to undue wear, as I have endeavored to indicate by the dotted line f" and the localized spacing between the rolls, although of somewhat eX- aggerated'showin in Fig. 2. It should be- -explained that t understood'to be along their worn rlght hand portions. 'In-v,

v'set or pass is prospringadustment, be eected wit respect e-next adjacent roll or rolls. modification is illustrated in Figs. 7 and 8, wherein the shaft f is engaged by the sinuous spring member g mamtained within vided with 'itsindividual ensaton may its cap o 1n lieu of the rubber washer n, but

y accomplishing the same purpose of permit-V ting the eccentric positioning of the shaft and the engagement of the folding rolls.

It will be understood that paper stock, which may be as thin as one-tbousandth of an inch, will not be frictionally engaged by two coacting rolls, each of which has been worn away locally along its knurled surfaces for one-thousandth of an inch, suiciently to actuate it through the coacting folding plate. However, with one of the rolls equipped with the terminal ,compensating means herein shown and described, it isclear that they may be forced locally into frictional engagement in correction of worn or imperfect sections of the rolls. rllhus this' simple, resilient mounting .permits materially longer operation with the worn rolls ofy a folding machine, and insures satisfactory signatures' therefrom, as compared with the machines of the prior art.

'Having now described the folding machine equipped with my improvements, I claim as new and desire to secure by Let- I ters Patent, the following:

1. In a paper-folding machineof the class described, the combination with a pair off eoacting folding rolls and foldingplate, of

a terminal mounting for one of said rolls permitting its eccentric adjustment therein toward theother roll, and au adjustment adapted to affect the eccentric relation of the mounting and theifrictional engagement of the rolls, substantially as set forth.

2. In a paper-,folding machine of the c lass described, the combination with paired Nfolding rolls and a coacting folding plate,l

of a terminal mounting for one of said rolls, comprising a hollow cylindrical member approximately the diameter ofthe roll and a contained resilient member adapted to assume eccentric relation within the other member, and a spring adjustment acting against said roll and mounting, wherebyit rolls, of a resilient mounting adapted tov effect `their co-operative engagement; one of said rolls having a terminal mounting permitting its progressive eccentric adjustment therein toward the other roll, substantially bas set forth. l

5. The combination with paired co-acting rolls, of a spring mounting resilicntly pressing them into cio-operative relation, and a terminal mounting for one of said rolls comprising a hollow cylindrical member approximately the. diameter of :the roll and a contained resilient element adapted to as- 'sume eccentric relation within said member for insuring improved vaction of the rolls, substantially as set forth.

6. In la ypaper-forwarding machine, the combination with paired forwarding rolls,

of a terminal mounting for one of said rolls,

comprising a cylindrical member approximately the diameter of the roll and an vassociatedresilient member adapted to sume eccentri relation with respect to the othermember., and adjusting means acting against said roll and mounting, whereby the body of the' roll may be brought closely `into operative engagement with the other roll, substantially as set forth. r

In testimony whereof fI do now affix my signature.

ANDREW OLSON. 

